{"id":5281,"date":"2014-09-10T16:45:14","date_gmt":"2014-09-10T14:45:14","guid":{"rendered":"http:\/\/www.vernicifirewall.it\/faq\/"},"modified":"2019-04-24T11:02:25","modified_gmt":"2019-04-24T09:02:25","slug":"faq","status":"publish","type":"page","link":"https:\/\/www.vernicifirewall.it\/en\/faq\/","title":{"rendered":"Frequent questions"},"content":{"rendered":"[mk_page_section bg_image=&#8221;http:\/\/www.vernicifirewall.it\/wp-content\/uploads\/2019\/03\/resistenza-fuoco-2.jpg&#8221; bg_position=&#8221;left center&#8221; bg_stretch=&#8221;true&#8221; enable_3d=&#8221;true&#8221; padding_top=&#8221;50&#8243; padding_bottom=&#8221;50&#8243; sidebar=&#8221;sidebar-1&#8243;][vc_column][vc_accordions][vc_accordion_tab title=&#8221;What is the difference between \u201cReaction to Fire\u201d and \u201cResistance to Fire\u201d?&#8221;][vc_column_text el_class=&#8221;black rennerp&#8221; css=&#8221;.vc_custom_1556096007800{margin-bottom: 0px !important;}&#8221;]Both classifications refer to the passive protection of the space. Classification of \u201cResistance to Fire\u201d concerns load-bearing structures, compartmentalization and fire doors. \u201cReaction to Fire\u201d certifies wall coverings, ceilings, floorings, furniture and every non-structural combustible material.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=&#8221;What is the difference between a fire-retardant coating system and a standard coating system?&#8221;][vc_column_text el_class=&#8221;black rennerp&#8221; css=&#8221;.vc_custom_1556096030851{margin-bottom: 0px !important;}&#8221;]A fire-retardant coating system has a higher application grammage because it has to create a \u201cbarrier\u201d against heat. In other words, it must protect the object from fire. In the past that was a worsening feature from an aesthetical point of view. Firewall range overcame this problem thanks to the flame-retardant or intumescent additives of the latest generation.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=&#8221;Which coated objects can be certified as \u201cprotected by fire-retardant coatings\u201d?&#8221;][vc_column_text el_class=&#8221;black rennerp&#8221; css=&#8221;.vc_custom_1556096052789{margin-bottom: 0px !important;}&#8221;]Fire-prevention standards include lots of certifications depending on the kind and the position of the substrate to be coated. Some substrates are unclassifiable because of their high grade of flammability; concerning building materials that are usually used in a structure, they can be classified both in Reaction and Resistance to Fire in the majority of cases.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=&#8221;Is it possible to certify an object exposed outdoors?&#8221;][vc_column_text el_class=&#8221;black rennerp&#8221; css=&#8221;.vc_custom_1556096080857{margin-bottom: 0px !important;}&#8221;]Fire-retardant systems have a weakness. They are made of additives that, if exposed to a heat source, react changing the coating film by expanding or crystallizing. The reaction begins at low temperatures (about 150\/200\u00b0C). For this reason, if directly exposed to UV rays during the summer, the coatings can become darker and, in the worst cases, separate from the substrate.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=&#8221;Do I need particular tools for the application of a fire-retardant coating system?&#8221;][vc_column_text el_class=&#8221;black rennerp&#8221; css=&#8221;.vc_custom_1556096110535{margin-bottom: 0px !important;}&#8221;]No, you don\u2019t. You just need the same tools, with which you apply water-based or solvent-based coatings. Fire-retardant coatings require a strong blending, through which we homogenize the additives of the composition. Furthermore, some flame-retardant additives can slow down the coating drying.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=&#8221;How to apply the correct grammage?&#8221;][vc_column_text el_class=&#8221;black rennerp&#8221; css=&#8221;.vc_custom_1556096171634{margin-bottom: 0px !important;}&#8221;]In order to be sure of the quantity to be applied, it is necessary to \u201cweigh\u201d the product or use a thickness gauge (tool used for measuring the wet coating film). The quantity is calculated depending on:<\/p>\n<ul>\n<li>1. the surface to be certified;<\/li>\n<li>2. the kind of application (potential over spray included).<\/li>\n<\/ul>\n<p>The technical data sheet always indicates the grammage, imposed by the certifications.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=&#8221;Which is the best coating system between water-based and solvent-based?&#8221;][vc_column_text el_class=&#8221;black rennerp&#8221; css=&#8221;.vc_custom_1556096199721{margin-bottom: 0px !important;}&#8221;]Water and solvent are necessary vehicles during the application. The solid content is composed by resins and powders, that create the useful coating film. A water-based resin boasts a more natural aesthetics than a solvent-based coating system. In schools or hospitals it is better to use a water-based system to ensure low emissions. However, when the coating film is dry, there are no more volatile compounds.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=&#8221;What to do if the object is already coated and it is necessary to make it fire-retardant?&#8221;][vc_column_text el_class=&#8221;black rennerp&#8221; css=&#8221;.vc_custom_1556096223901{margin-bottom: 0px !important;}&#8221;]This is more a technical, than a regulatory problem. The law imposes to apply a system, certified in the correct grammage. It doesn\u2019t refer to the previous coating treatment. In this way, it will be necessary to verify the adhesion of the homologated system on the old coating, in order to avoid next detachments. Firewall specialists recommend sanding the substrate to raw wood, excluding any risk.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=&#8221;Is it possible to use a fire-retardant system, certified for floor, to protect a wall? And a fire-retardant system, certified for wall, to cover a wooden flooring?&#8221;][vc_column_text el_class=&#8221;black rennerp&#8221; css=&#8221;.vc_custom_1556096249878{margin-bottom: 0px !important;}&#8221;]The tests of Reaction and Resistance to Fire are very different. The sample on the floor has a lower irradiation than the sample on the wall. The obtained class being equal, the protection is really discordant. That\u2019s why a system certified for wooden flooring cannot be used to cover a wall, but from a legal point of view it is possible to do the opposite.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=&#8221;I\u2019m a painter. Am I obliged to release the certificate of application?&#8221;][vc_column_text el_class=&#8221;black rennerp&#8221; css=&#8221;.vc_custom_1556096271017{margin-bottom: 0px !important;}&#8221;]Yes, you are. It means being sure to comply with standards. The \u201cDeclaration of Conformity\u201d is released by Renner Italia only after the compilation of the \u201cCertificate of Application\u201d. And only after the editing of the \u201cDeclaration of Conformity\u201d, the safety manager makes sure of the correct installation of the object.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=&#8221;I\u2019m a designer or a safety manager of a building site. Do I need a professional painter to comply with standards?&#8221;][vc_column_text el_class=&#8221;black rennerp&#8221; css=&#8221;.vc_custom_1556096312078{margin-bottom: 0px !important;}&#8221;]There is a &#8220;ministerial register&#8221;, through which the safety managers can avail themselves of the competence of professional painters. It is always better to call professional painters. However, to obtain the \u201cDeclaration of Conformity\u201d and comply with standards, it is enough to fill in the \u201cCertificate of Application\u201d, to be required from the dealer of the fire-retardant system.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=&#8221;Can I certify a fire door by means of a system certified in \u201cResistance to Fire\u201d?&#8221;][vc_column_text el_class=&#8221;black rennerp&#8221; css=&#8221;.vc_custom_1556096351330{margin-bottom: 0px !important;}&#8221;]The \u201cResistance to Fire\u201d of a certified fire door is given by the structure, that must comply with the severe European standard REI, \u201cMechanical resistance, thermic and smoke insulation\u201d. The door will be equipped with fire-retardant gaskets and flame-resistant hinges. Furthermore, it must have an unflammable core, to limit the heat and smoke transfer to the cold side. A coating system cannot provide for these requests. On the other side, it is compulsory to use a fire-retardant system on these objects, after the achievement of the REI certification, in order not to worsen the obtained class.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=&#8221;Is it possible to use a certificate of a matt fire-retardant system in the glossy version?&#8221;][vc_column_text el_class=&#8221;black rennerp&#8221; css=&#8221;.vc_custom_1556096373706{margin-bottom: 0px !important;}&#8221;]Only if it complies with the standard. Usually, in order to certify a system with different kinds of gloss, it is necessary to test the mattest and the glossiest. In this way all medium kinds of gloss will be certify in the same class.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=&#8221;Am I compliant with the standard if I apply a higher grammage than the certified one?&#8221;][vc_column_text el_class=&#8221;black rennerp&#8221; css=&#8221;.vc_custom_1556096394046{margin-bottom: 0px !important;}&#8221;]The grammage to be applied must always correspond to the certified one. A higher protection doesn\u2019t always correspond to a higher quantity of use fire-retardant coating.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=&#8221;Does the applied fire-retardant coating have an expiration date?&#8221;][vc_column_text el_class=&#8221;black rennerp&#8221; css=&#8221;.vc_custom_1556096414307{margin-bottom: 0px !important;}&#8221;]The Italian standard provides for a check of the coating after 5 years from the application (average duration of the Certificate of Fire Prevention). In case of evident deteriorations, it will be necessary to restore the objects with the same certified quantity. If the coating film is intact, the fire-prevention safety manager will evaluate the eventual remake or if it is possible to wait for other 5 years. After some degradation tests, Renner Italia evaluated that the anti-flame additives used in Firewall systems don\u2019t lose its efficacy even after many years.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=&#8221;If I dilute the product before the application, do I have to increase the grammage?&#8221;][vc_column_text el_class=&#8221;black rennerp&#8221; css=&#8221;.vc_custom_1556096457642{margin-bottom: 0px !important;}&#8221;]Yes, the quantity of water or solvent added to certified products must be proportionally compensated to the tested grammage (e.g. if I have to apply by standards 150 gr\/sqm of a product, but I add the 20% of water, I have to apply 180 gr\/sqm).[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=&#8221;What is the difference between DM 26\/6\/84 and DM 06\/03\/92 of \u201cReaction to Fire\u201d?&#8221;][vc_column_text el_class=&#8221;black rennerp&#8221; css=&#8221;.vc_custom_1556096488286{margin-bottom: 0px !important;}&#8221;]The test is the same. While DM 26\/06\/84 certifies the coating product + the object, DM 06\/03\/92 certifies the coating product on the wood.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=&#8221;What is SCIA?&#8221;][vc_column_text el_class=&#8221;black rennerp&#8221; css=&#8221;.vc_custom_1556096512407{margin-bottom: 0px !important;}&#8221;]SCIA is the new procedure to obtain CPI (Certificate of Fire Prevention) and is signed by the activity manager; the assertion to be attached to the procedure, that certifies the activity conformity to the requirements of fire prevention and safety, is signed by a technician, that has been licensed in his profession. Declarations and certifications accompanying SCIA are signed by the technician designated to coordinate \u2013 direct \u2013 supervise the work, i.e. by a fire-prevention professional, registered in the Ministry of the Interior registers, as indicated in DM 07\/08\/2012.[\/vc_column_text][\/vc_accordion_tab][vc_accordion_tab title=&#8221;Did the European Certification replace the single laws of EU countries?&#8221;][vc_column_text el_class=&#8221;black rennerp&#8221; css=&#8221;.vc_custom_1556096539362{margin-bottom: 0px !important;}&#8221;]No, it didn\u2019t. UNI, NF, UNE, BS, DIN, ONORM, etc. standards coexist with the new EN standards because the European Certification regulation n. 305\/2011 both refers only to products and building elements and regulates their commercialization in all countries where the CE marking is recognized. The past fire-prevention standards and procedures are still valid for all the others objects in the local (furnishing accessories, stands and everything that is not permanently integrated in the structure).[\/vc_column_text][\/vc_accordion_tab][\/vc_accordions][\/vc_column][\/mk_page_section]\n","protected":false},"excerpt":{"rendered":"<p>[mk_page_section bg_image=&#8221;http:\/\/www.vernicifirewall.it\/wp-content\/uploads\/2019\/03\/resistenza-fuoco-2.jpg&#8221; bg_position=&#8221;left center&#8221; bg_stretch=&#8221;true&#8221; enable_3d=&#8221;true&#8221; padding_top=&#8221;50&#8243; padding_bottom=&#8221;50&#8243; sidebar=&#8221;sidebar-1&#8243;][vc_column][vc_accordions][vc_accordion_tab title=&#8221;What is the difference between \u201cReaction to Fire\u201d and \u201cResistance to Fire\u201d?&#8221;][vc_column_text el_class=&#8221;black rennerp&#8221; css=&#8221;.vc_custom_1556096007800{margin-bottom: 0px !important;}&#8221;]Both classifications refer to the passive protection of the space. Classification of \u201cResistance to Fire\u201d concerns load-bearing structures, compartmentalization and fire doors. \u201cReaction to Fire\u201d certifies wall coverings, ceilings, floorings, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["post-5281","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Faq e consigli sulle vernici ignifughe<\/title>\n<meta name=\"description\" content=\"Informazioni, materiali, attestazioni. Le risposte alle domande sulle vernici ignifughe. 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